Combined release fire and straight fire gun



Sept- 3, 1946. c. A.' YOUNG COMBINED RELEASE FIRE AND STRAIGHT FIRE GUN Filed Deo. '7. 1942 2 *Sheets-Sheet 1 INVENT OR.

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` A TTOQNEY Sept. 3, 1946. c. A. YOUNG COMBINED RELEASE FIRE AND STRAIGHT FIRE GUN Filed Dec. 7, 1942 2 Sheets-Sheet 2 Patented Sept. 3, 1946 COMBINED RELEASE FIRE AND STRAIGHT FIRE GUN

Charles A. Young, Springfield, Ohio Application December 7, 1942, Serial No. 468,088

6 Claims.

This invention relates to guns, it more particularly relating to guns of the small arm type and especially relates to means for readily converting the gun into a straight iire or release fire gun.

One of the objects of the invention is to provide more simple and effective means in a gun of the type referred to to place the mechanism in the position for straight iire or for release fire.

A further and more specific object is to provide a mechanism of the character referred to in which the function of converting the gun into a straight fire or release fire is accomplished by `a movement of the trigger from a forward position to a rearward position in the housing in which the ring mechanism is located.

A further object of the invention is to provide a device for holding the sear for the impact member in inoperative position when the trigger is to be shifted from one of its positions to the other and for also having said device operate to lock the sear in its engaged position with the hammer and also have said device adapted to permit the free movement of the sear to a position to engage the impact member when said member is cocked.

In the accompanying drawings:

Fig. 1 is a longitudinal section of a portion of a gun of the lbreak-down type embodying the improvements, a portion of the parts being shown in elevation, the parts being shown in released fire position.

Fig. 2 is a longitudinal section of some of the parts shown` in Fig. l, but in a different position.

Fig. 3 is a longitudinal section of a gun showing the parts in arposition for straight firing,l a portion of the parts being shown in elevation.

Fig. 4 is a plan view of the sear.

Fig. 5 is a longitudinal section of a modification showing the `mechanism applied to a pump gun, with some of the parts shown in side elevation; the parts being shown in the position assumed after the gun has been fired and also in the position for straight ring.

Fig. 6 is a view similar to Fig. 5 but showing the impact member in cocked position.

Fig. 7 is a longitudinal sectional view of some of the parts showing the trigger shifted to a position for release fire and also showing the parts in the position assumed after the impact member has been released by the sear.

Fig. 8 is a View similar to Fig. 7 but showing the impact member in cocked position.

Fig., 9 is a vertical section on the line 9-9 of Fig. 7.

2 Fig. 10 is a transverse section on the line I-I I) of Fig. '7.

As is now well known in the art, release re guns are those which fire upon releasing pressure upon the trigger after it has been drawn to its rearmost position as distinguished from guns which fire upon a rearward pull upon the trigger, the release re'being desirable to avoid inching upon the part of the shooter, and it is desirable to provide for using the gun either as a release iire gun or as a straight fire gun.

Referring first to Figs. 1 to 4, inclusive, of the drawings, I represents a portion of the stock of the gun, 2 the barrel, 3 an intermediate metallic housing to which the stock I is connected and which supports the barrel and the firing mechanism, this housing having connected thereto the usual finger guard `I and also carrying the firing pin 5. The hammer is indicated at 6, being pivotally mounted upon the stationary pin 6" which is supported by housing 3. The trigger is indicated at 'I and in the present case has a detent B integrally formed therewith, the detent having a bent nose 8'. 'I'he trigger has an elongated slot 9 and extended through this slot is a fixed pin I0 which is supported by the housing. The sear for the hammer is represented at II, this sear being pivotally mounted upon the fixed pin I0 and having a lateral extension II adapted to engage in a notch in the hammer to hold it cocked, the sear being pressed to engaging position with the notch by the coil spring I3. The sear lies close to the trigger I and has its rear end laterally offset as indicated at I I" which oifset portion lies over the trigger. The trigger extends through an elongated slot 3' of the housing and is capable not only, of a rearward and forward movement in the slot to the extent allowed by the movement of the slot 9 in relation tothe fixed pin ID, but also of a swinging movement about the pin I0.

Referring now to Fig. 3, -for straight fire, with the hammer 6 down, the trigger 'I is pulled back- Wardly so as to remove the integral detent 8 out of the path of the hammer when the hammer is cocked, the rearward movement of the trigger being limited by the forward wall of the slot 9 engaging with the stationary pin I0. When the hammer is cocked the sear II engages with the notch in the hammer to hold the hammer cocked by the pressure of the sear spring I3. When the sear spring I3 throws the sear II to a position to engage the notch in the hammer a projection I4 on the rear end of the sear will enter a notch I5 on the upper surface of the trigger. Tofre, further pressure in a rearward direction is put upon the trigger which causes the trigger to swing about the stationary pin Il) and lift the rear end of the sear to cause it to disengage the hammer to permit it to move to firing position by the action of its spring |6. This swinging movement of the trigger, however, is not sufficient to place the bent nose 8' of the detent 8 in engagement with the hammer so that the firing is a straight rire action.

Referring now to Figs. 1 and 2, when the gun is to be used as a release fire gun, with the hammer down, the trigger is moved forwardly to place the nose 8' of the detent 8 in the path. of the hammer when the hammer is cocked, the bent nose of the detent 8 being placed in the path of the lower inclinedwall of the notch 6' in the hammer but does not come in contact with, the lower wall of the notch, a slight clearance being left between the walls of the notch and the bent end of the detent to prevent binding. The

projection I4V has also been placed in line with the notch in the trigger so that when pressure is put upon Vthe trigger in a rearward direction it will swing about the pin I to cause the walls of the slot tor engage with the projection |4 to tilt the sear to cause the sear to be released from the hammer, but does not entirely remove the bent nose 3" of the detent from the notch but does cause this nose to'come in Contact with the lower wall of the notch 5 so that the hammer is still held from firing by continued pressure upon the trigger. When pressure upon the triggerv is released, however, the lower wall of the notch will have a camming action upon the nose ofthe detent so as to permit the hammer to be Y released. Y

Referring now to Figs. 5 to 10, inclusive, there is shown a modification in which the mechanism is rmore particularly intended for a pump gun where 2| represents a portion of the Stock'of the gun, 22' the barrel and 23 an intermediate me? tallic housing to which the stock 2| is connected and which supports the barrel and the firing mechanism, this housing having connected thereto the usual finger guard 24 and also carrying the breech bolt 25 in which is located the usual spring-pressedv ring pin 25". The impact member in the Vform of va hammer is indicated at 26, being pivotally mounted upon the stationary rod or pin 26 which is supported by the housing 23.' The trigger is indicated at 21 and in the present case has a detent 23' rigidly formed therewith, the detent having a bent nose 28 on the free end thereof. The trigger has anelongated slot 29 formed in each portion 2l' of its outer bifurcated end and extending through these slots is a fixed pin 30 which is supported by the housing. The sear for the hammer is represented at 3|, this sea-r being pivotally mounted upon the fixed pin 30 and has its rear end laterally offset as indicated at 3|', which offset portion lies over the trigger. The triggerextends through an elongated slot 23 in the removable bottom of thel housing and is Vcapable not only of a rearward; and forward movementin the slot 23 to the extent allowed by the movement of the slots 29 in relation to the xed pin 3l! but also a swinging movement about the pin.

Referring now to Figs. 5` and 6, for straight fire, with the hammer down, the ltrigger is pulled backwardlyv so as to remo-ve the detent 2B out of the path of the hammer when'the hammer is cocked, the rearward movement of the trigger being limited by the forward wall of, the slots 2?: engaging the stationary pin 30. When the hammer is cocked the sear 3l engages with the notch in the hammer to hold the hammer cocked by the pressure of the sear spring 33. When the sear spring 33 throws the seal to a position to engage the notch in the hammer a projection 34 on the rear end of the sear will enter a notch 35 on the upper surface of the trigger. To re, further pressure in a rearward, direction is put upon the trigger to cause the trigger to swing l@ about the stationary pin 3|) and lift the rear end of` the sear 3| to'cause the forward end of the sear to disengage the hammer to permit it to move to ring position by the action of its spring 3-6. This swinging movement of the trigger however isr not sufficient to place the bent nose 28 ofthe detent 23 in engagement with the hammer so. that thefiring is a straight fire action.

Referring now to Figs. 7 and 8, when the gun is to be used as a release re gun, withn the hammer down, the trigger 2l is moved forwardly to place the nose 2-8 of the detent 28 in the path of the hammer when the hammer is cocked, the bent nose ofthe detent in the present case being placed in the path of a laterally extending pin 26 carried by the hammer but does not come in close contact therewith, as shown inrdotted lines in Fig. 8, a slight clearance being left between the nose of the detent andthe pin to'prevent binding. The projection 34 on the rear end of the sear has also been placed in line with a notch 3l in the triggerl s0 that when pressure is put upon the trigger in a rearward direction it will swing about the pin 30 to cause the walls ofthe slot to engage with the projection 3'4 to tilt the sear to cause the sear to be released' from the hammer, but does not entirely remove the bent nose 28 of the detent from the path of the pin 26" so that the hammer is still held vfrom firing by continued pressure upon'the trigger. When thev pressure upon the trigger is released, however,

vthe pin 26y will have a camming action upon the nose of the detent to permit the hammer to be released, the lower wall of the nose 28 being inclined sufciently to permit of this camming action. In the present case the trigger and detent'V are gravity-operated and will be arrested by the lower end ofthe triggerl coming in contact with the finger guard 24.

In this modified arrangement itis desirable that means be provided to hold the sear 3| in in-Y operative position when the trigger is being shifted from one position to another and to also provide means for locking the scar in engagement with lthe hammer for safety purposes. To this '55 end, there is provided a pin 40 which is mounted for slidable movement in a lateral direction in the side walls of the housing 23, this pin having three .positions of adjustment, being held in each position of adjustment by a spring-pressed detent 4| which is engageable with any one of the notches 42, 43 and 44 in the pin, the detent being mounted in one side wall of the housing 23. The pin has an intermediate groove 45 and also over-i Y hanging this groove is a lip 46. When it is`Y de- 'G5 sired to shift the trigger from one of its positions -to theV other theV pin is moved axially Auntil the lip 46 4overlies the end off the sear 3| so that the sear will be held in inoperative position with relation to the notch in the hammer 25, the detent 4| then engaging in the notch 42. After the trigger has been shifted the pin will be moved until the detent engages .the central notch 43 so that the sear will be permitted lto moveinto operative relation with the notch in the hammer after the hammer has been cocked. When it is desired to lock the sear in its engaged position with the notch in the hammer the pin is shifted until the detent engages the notch 44, in which position that portion of the pin occupied by the notch i2 Will move under the sear to lock it in its engaged position with the notch in the hammer. The under side of the sear is provided with a projection 41 so as to limit its movement into the depression or groove 45 of the pin when the sear has been moved to disengaged position with the notch in the hammer and to strengthen the sear at the point where the lock-ing portions of the pin engage it.

The mechanism hereinbefore described is set in either of the release re or straight fire positions by manual forward and rearward movement of the trigger respectively. It is obvious that suitable indicia may be placed upon the firearm adjacent the trigger so as to indicate the firing position of the latter.

Having thus described my invention, I claim:

1. In a gun of the character described, an impact member, a sear for holding said member cocked, a detent for also holding said member cocked under certain conditions, a trigger integrally connected with said detent, a mount upon which the trigger and detent are movable in unison relative to the sear and impact member in a fore and aft direction of the gun into and out of engaging relation of the detent with the impact member, but at all times maintaining engaging relation of the trigger with the sear to disengage the latter from the impact member under influence of retractive pressure applied to the trigger and in one such position of adjustment to simultaneously engage the detent with the impact member, from which it is subsequently disengaged to release the impact member upon relaxation of retractive p-ressure previously applied to the trigger.

2. In a gun of the character described, an impact member, a. sear for holding said member cocked, a trigger engageable with the said sear to disengage the sear from the impact member at all times when the trigger is retracted, a, detent rigidly connected to said trigger to hold said impact member cocked when the gun is to be used for release firing, said trigger having a limited movement in a longitudinal direction of the gun to position said detent out of operative relation with said impact member when the gun is to be used for straight firing.

3. In a gun of the character described, an impact member, a pivoted sear for holding said impact member cocked, a trigger separate from said sear for operating said sear having an elongated slot, a fixed pivot pin extending through said slot, a detent rigidly connected with said trigger to hold said impact member cocked when the gun is to be used for release firing, said trigger having a movement limited by the contact of one Wall of said slot with said pin to position said detent in inoperative relation with said impact member when the gun is to be used for straight nre.

4. In a gun of the character described, an impact member, a pivoted spring-pressed sear for holding said member cocked, a trigger separate from said sear but operable atall times upon retraction of the trigger to release said sear from said impact member, a detent rigidly connected with said trigger to hold said impact member cocked when the gun is to be used for release liring, said trigger having a limited longitudinal movement of the gun to position said detent out of operative relation with said impact member when the gun is to be used for straight firing.

5. In a gun of the character described, an impact member, a releasable sear normally biased toward operative position for temporarily holding the impact member in cocked position, a combined trigger and detent, and means for slidably and pivotally mounting said combined trigger and detent in operative relation to said impact member and sear, said detent being slidable forwardly by the trigger into a position for engaging and holding the impact member independently of the sear when the latter is released by the trigger during release re position of the trigger and said detent being slidably rearwardly out of the path of movement of the impact member when the trigger is in straight fire position for directly releasing the sear.

6. In a gun of the character described, an impact member, a pivoted sear normally biased toward operative position for releasably holding the impact member in cocked position, means for pivotally mounting said sear, a combined trigger and detent slidably and pivotally supported on the sear mounting means and having a pair of spaced notches therein, and means carried by the sear for selectively engaging either of said notches when the trigger and thereby the detent is shifted to either its release nre or straight re position.

CHARLES A. YOUNG. 

